﻿// Remove on V5
// using FishNet.Managing;
// using FishNet.Managing.Timing;
// using FishNet.Utility.Extension;
// using GameKit.Dependencies.Utilities;
// using System.Runtime.CompilerServices;
// using UnityEngine;
// using UnityEngine.Scripting;
//
// namespace FishNet.Object.Prediction
// {
//     /// <summary>
//     /// This class is under regular development and it's API may change at any time.
//     /// </summary>
//     public sealed class ChildTransformTickSmoother : IResettable
//     {
//         #region Types.
//         [Preserve]
//         private struct TickTransformProperties
//         {
//             public uint Tick;
//             public TransformProperties Properties;
//
//             public TickTransformProperties(uint tick, Transform t)
//             {
//                 Tick = tick;
//                 Properties = new TransformProperties(t.localPosition, t.localRotation, t.localScale);
//             }
//             public TickTransformProperties(uint tick, Transform t, Vector3 localScale)
//             {
//                 Tick = tick;
//                 Properties = new TransformProperties(t.localPosition, t.localRotation, localScale);
//             }
//             public TickTransformProperties(uint tick, TransformProperties tp)
//             {
//                 Tick = tick;
//                 Properties = tp;
//             }
//         }
//         #endregion
//
//         #region Private.
//         /// <summary>
//         /// Object to smooth.
//         /// </summary>
//         private Transform _graphicalObject;
//         /// <summary>
//         /// When not MoveRates.UNSET_VALUE the graphical object will teleport into it's next position if the move distance exceeds this value.
//         /// </summary>
//         private float _teleportThreshold;
//         /// <summary>
//         /// How quickly to move towards goal values.
//         /// </summary>
//         private MoveRates _moveRates = new MoveRates(MoveRates.UNSET_VALUE);
//         /// <summary>
//         /// True if a pretick occurred since last postTick.
//         /// </summary>
//         private bool _preTicked;
//         /// <summary>
//         /// World offset values of the graphical from the NetworkObject during initialization.
//         /// </summary>
//         private TransformProperties _gfxInitializedOffsetValues;
//         /// <summary>
//         /// World values of the graphical after it's been aligned to initialized values in PreTick.
//         /// </summary>
//         private TransformProperties _gfxPreSimulateWorldValues;
//         /// <summary>
//         /// TickDelta on the TimeManager.
//         /// </summary>
//         private float _tickDelta;
//         /// <summary>
//         /// How many ticks to interpolate over when not using adaptive.
//         /// </summary>
//         private byte _ownerInterpolation;
//         /// <summary>
//         /// Current interpolation, regardless of if using adaptive or not.
//         /// </summary>
//         private byte _interpolation;
//         /// <summary>
//         /// NetworkObject this is for.
//         /// </summary>
//         private NetworkObject _networkObject;
//         /// <summary>
//         /// Value to multiply movement by. This is used to reduce or increase the rate the movement buffer is consumed.
//         /// </summary>
//         private float _movementMultiplier = 1f;
//         /// <summary>
//         /// TransformProperties to move towards.
//         /// </summary>
//         private BasicQueue<TickTransformProperties> _transformProperties;
//         /// <summary>
//         /// Which properties to smooth.
//         /// </summary>
//         private TransformPropertiesFlag _ownerSmoothedProperties;
//         /// <summary>
//         /// Which properties to smooth.
//         /// </summary>
//         private TransformPropertiesFlag _spectatorSmoothedProperties;
//         /// <summary>
//         /// Updates the smoothedProperties value.
//         /// </summary>
//         /// <param name="value">New value.</param>
//         /// <param name="forSpectator">True if updating values for the spectator, false if updating for owner.</param>
//         public void SetSmoothedProperties(TransformPropertiesFlag value, bool forSpectator)
//         {
//             if (forSpectator)
//                 _spectatorSmoothedProperties = value;
//             else
//                 _ownerSmoothedProperties = value;
//         }
//         /// <summary>
//         /// Amount of adaptive interpolation to use.
//         /// </summary>
//         private AdaptiveInterpolationType _adaptiveInterpolation = AdaptiveInterpolationType.Low;
//         /// <summary>
//         /// Updates the adaptiveInterpolation value.
//         /// </summary>
//         /// <param name="adaptiveInterpolation">New value.</param>
//         public void SetAdaptiveInterpolation(AdaptiveInterpolationType adaptiveInterpolation)
//         {
//             if (adaptiveInterpolation != AdaptiveInterpolationType.Off)
//             {
//                 adaptiveInterpolation = AdaptiveInterpolationType.Off;
//                 Debug.Log($"AdaptiveInterpolation has been changed to off at runtime while it's under development. This message may be ignored.");
//             }
//             _adaptiveInterpolation = adaptiveInterpolation;
//         }
//         /// <summary>
//         /// Set interpolation to use for spectated objects if adaptiveInterpolation is off.
//         /// </summary>
//         private byte _spectatorInterpolation;
//         /// <summary>
//         /// Sets the spectator interpolation value.
//         /// </summary>
//         /// <param name="value">New value.</param>
//         /// <param name="disableAdaptiveInterpolation">True to also disable adaptive interpolation to use this new value.</param>
//         public void SetSpectatorInterpolation(byte value, bool disableAdaptiveInterpolation = true)
//         {
//             _spectatorInterpolation = value;
//             if (disableAdaptiveInterpolation)
//                 _adaptiveInterpolation = AdaptiveInterpolationType.Off;
//         }
//         /// <summary>
//         /// Previous parent the graphical was attached to.
//         /// </summary>
//         private Transform _previousParent;
//         /// <summary>
//         /// True if to detach at runtime.
//         /// </summary>
//         private bool _detach;
//         /// <summary>
//         /// True if were an owner of the NetworkObject during PreTick.
//         /// This is only used for performance gains.
//         /// </summary>
//         private bool _ownerOnPretick;
//         /// <summary>
//         /// True if adaptive interpolation should be used.
//         /// </summary>
//         private bool _useAdaptiveInterpolation => (!_ownerOnPretick && _adaptiveInterpolation != AdaptiveInterpolationType.Off);
//         /// <summary>
//         /// True if Initialized has been called and settings have not been reset.
//         /// </summary>
//         private bool _initialized;
//         #endregion
//
//         #region Const.
//         /// <summary>
//         /// Maximum allowed entries to be queued over the interpolation amount.
//         /// </summary>
//         private int MAXIMUM_QUEUED_OVER_INTERPOLATION = 3;
//         #endregion
//         
//         ~ChildTransformTickSmoother()
//         {
//             // This is a last resort for if something didnt deinitialize right.
//             ResetState();
//         }
//
//         /// <summary>
//         /// Initializes this smoother; should only be completed once.
//         /// </summary>
//         public void Initialize(NetworkObject nob, Transform graphicalObject, bool detach, float teleportDistance, float tickDelta, byte ownerInterpolation, TransformPropertiesFlag ownerSmoothedProperties, byte spectatorInterpolation, TransformPropertiesFlag specatorSmoothedProperties, AdaptiveInterpolationType adaptiveInterpolation)
//         {
//             ResetState();
//             _detach = detach;
//             _networkObject = nob;
//             _transformProperties = CollectionCaches<TickTransformProperties>.RetrieveBasicQueue();
//             _gfxInitializedOffsetValues = nob.transform.GetTransformOffsets(graphicalObject);
//             _tickDelta = tickDelta;
//             _graphicalObject = graphicalObject;
//             _teleportThreshold = teleportDistance;
//             _ownerInterpolation = ownerInterpolation;
//             _spectatorInterpolation = spectatorInterpolation;
//             _ownerSmoothedProperties = ownerSmoothedProperties;
//             _spectatorSmoothedProperties = specatorSmoothedProperties;
//             SetAdaptiveInterpolation(adaptiveInterpolation);
//             UpdateInterpolation(0);
//             _initialized = true;
//         }
//
//         /// <summary>
//         /// Deinitializes this smoother resetting values.
//         /// </summary>
//         public void Deinitialize()
//         {
//             ResetState();
//         }
//
//         /// <summary>
//         /// Updates interpolation based on localClient latency.
//         /// </summary>
//         private void UpdateInterpolation(uint clientStateTick)
//         {
//             if (_networkObject.IsServerStarted || _networkObject.IsOwner)
//             {
//                 _interpolation = _ownerInterpolation;
//             }
//             else
//             {
//                 if (_adaptiveInterpolation == AdaptiveInterpolationType.Off)
//                 {
//                     _interpolation = _spectatorInterpolation;
//                 }
//                 else
//                 {
//                     float interpolation;
//                     TimeManager tm = _networkObject.TimeManager;
//                     if (clientStateTick == 0)
//                     {
//                         // Not enough data to calculate; guestimate. This should only happen once.
//                         float fRtt = (float)tm.RoundTripTime;
//                         interpolation = (fRtt / 10f);
//
//                     }
//                     else
//                     {
//                         interpolation = (tm.LocalTick - clientStateTick) + _networkObject.PredictionManager.StateInterpolation;
//                     }
//
//                     switch (_adaptiveInterpolation)
//                     {
//                         case AdaptiveInterpolationType.VeryLow:
//                             interpolation *= 0.25f;
//                             break;
//                         case AdaptiveInterpolationType.Low:
//                             interpolation *= 0.375f;
//                             break;
//                         case AdaptiveInterpolationType.Medium:
//                             interpolation *= 0.5f;
//                             break;
//                         case AdaptiveInterpolationType.High:
//                             interpolation *= 0.75f;
//                             break;
//                             // Make no changes for maximum.
//                     }
//
//                     interpolation = Mathf.Clamp(interpolation, 1f, (float)byte.MaxValue);
//                     _interpolation = (byte)Mathf.RoundToInt(interpolation);
//                 }
//             }
//         }
//
//         internal void OnStartClient()
//         {
//             if (!_detach)
//                 return;
//
//             _previousParent = _graphicalObject.parent;
//             TransformProperties gfxWorldProperties = _graphicalObject.GetWorldProperties();
//             _graphicalObject.SetParent(null);
//             _graphicalObject.SetWorldProperties(gfxWorldProperties);
//         }
//
//         internal void OnStopClient()
//         {
//             if (!_detach || _previousParent == null || _graphicalObject == null)
//                 return;
//
//             _graphicalObject.SetParent(_previousParent);
//             _graphicalObject.SetWorldProperties(GetNetworkObjectWorldPropertiesWithOffset());
//         }
//
//         /// <summary>
//         /// Called every frame.
//         /// </summary>
//         internal void Update()
//         {
//             if (!CanSmooth())
//                 return;
//
//             if (_useAdaptiveInterpolation)
//                 AdaptiveMoveToTarget(Time.deltaTime);
//             else
//                 BasicMoveToTarget(Time.deltaTime);
//         }
//
//         /// <summary>
//         /// Called when the TimeManager invokes OnPreTick.
//         /// </summary>
//         public void OnPreTick()
//         {
//             if (!CanSmooth())
//                 return;
//
//             _preTicked = true;
//
//             _ownerOnPretick = _networkObject.IsOwner;
//             if (_useAdaptiveInterpolation)
//                 DiscardExcessiveTransformPropertiesQueue();
//             else
//                 ClearTransformPropertiesQueue();
//             // These only need to be set if still attached.
//             if (!_detach)
//                 _gfxPreSimulateWorldValues = _graphicalObject.GetWorldProperties();
//         }
//
//         /// <summary>
//         /// Called when the PredictionManager invokes OnPreReconcile.
//         /// </summary>
//         public void OnPreReconcile()
//         {
//             UpdateInterpolation(_networkObject.PredictionManager.ClientStateTick);
//         }
//
//         /// <summary>
//         /// Called when the TimeManager invokes OnPostReplay.
//         /// </summary>
//         /// <param name="clientTick">Replay tick for the local client.</param>
//         public void OnPostReplay(uint clientTick)
//         {
//             if (_transformProperties.Count == 0)
//                 return;
//             if (!_useAdaptiveInterpolation)
//                 return;
//
//             uint firstTick = _transformProperties.Peek().Tick;
//             // Already in motion to first entry, or first entry passed tick.
//             if (clientTick <= firstTick)
//                 return;
//
//             ModifyTransformProperties(clientTick, firstTick);
//         }
//
//         /// <summary>
//         /// Called when TimeManager invokes OnPostTick.
//         /// </summary>
//         /// <param name="clientTick">Local tick of the client.</param>
//         public void OnPostTick(uint clientTick)
//         {
//             if (!CanSmooth())
//                 return;
//
//             //If preticked then previous transform values are known.
//             if (_preTicked)
//             {
//                 if (_useAdaptiveInterpolation)
//                     DiscardExcessiveTransformPropertiesQueue();
//                 else
//                     ClearTransformPropertiesQueue();
//                 //Only needs to be put to pretick position if not detached.
//                 if (!_detach)
//                     _graphicalObject.SetWorldProperties(_gfxPreSimulateWorldValues);
//                 AddTransformProperties(clientTick);
//             }
//             //If did not pretick then the only thing we can do is snap to instantiated values.
//             else
//             {
//                 //Only set to position if not to detach.
//                 if (!_detach)
//                     _graphicalObject.SetWorldProperties(GetNetworkObjectWorldPropertiesWithOffset());
//             }
//         }
//
//         /// <summary>
//         /// Teleports the graphical to it's starting position and clears the internal movement queue.
//         /// </summary>
//         public void Teleport()
//         {
//             ClearTransformPropertiesQueue();
//             TransformProperties startProperties = _networkObject.transform.GetWorldProperties();
//             startProperties.Add(_gfxInitializedOffsetValues);
//             _graphicalObject.SetWorldProperties(startProperties);
//         }
//
//         /// <summary>
//         /// Clears the pending movement queue.
//         /// </summary>
//         private void ClearTransformPropertiesQueue()
//         {
//             _transformProperties.Clear();
//             //Also unset move rates since there is no more queue.
//             _moveRates = new MoveRates(MoveRates.UNSET_VALUE);
//         }
//
//         /// <summary>
//         /// Discards datas over interpolation limit from movement queue.
//         /// </summary>
//         private void DiscardExcessiveTransformPropertiesQueue()
//         {
//             if (!_useAdaptiveInterpolation)
//             {
//                 _networkObject.NetworkManager.LogError($"This method should only be called when using adaptive interpolation.");
//                 return;
//             }
//
//             int dequeueCount = (_transformProperties.Count - (_interpolation + MAXIMUM_QUEUED_OVER_INTERPOLATION));
//             //If there are entries to dequeue.
//             if (dequeueCount > 0)
//             {
//                 TickTransformProperties tpp = default;
//                 for (int i = 0; i < dequeueCount; i++)
//                     tpp = _transformProperties.Dequeue();
//
//                 SetAdaptiveMoveRates(tpp.Properties, _transformProperties[0].Properties);
//             }
//         }
//
//         /// <summary>
//         /// Adds a new transform properties and sets move rates if needed.
//         /// </summary>
//         private void AddTransformProperties(uint tick)
//         {
//             TickTransformProperties tpp = new TickTransformProperties(tick, GetNetworkObjectWorldPropertiesWithOffset());
//
//             _transformProperties.Enqueue(tpp);
//             //If first entry then set move rates.
//             if (_transformProperties.Count == 1)
//             {
//                 TransformProperties gfxWorldProperties = _graphicalObject.GetWorldProperties();
//                 if (_useAdaptiveInterpolation)
//                     SetAdaptiveMoveRates(gfxWorldProperties, tpp.Properties);
//                 else
//                     SetBasicMoveRates(gfxWorldProperties, tpp.Properties);
//             }
//         }
//
//         /// <summary>
//         /// Modifies a transform property for a tick. This does not error check for empty collections.
//         /// </summary>
//         /// <param name="firstTick">First tick in the queue. If 0 this will be looked up.</param>
//         private void ModifyTransformProperties(uint clientTick, uint firstTick)
//         {
//             uint tick = clientTick;
//             /*Ticks will always be added incremental by 1 so it's safe to jump ahead the difference
//             * of tick and firstTick. */
//             int index = (int)(tick - firstTick);
//             //Replace with new data.
//             if (index < _transformProperties.Count)
//             {
//                 _transformProperties[index] = new TickTransformProperties(tick, _networkObject.transform, _graphicalObject.localScale);
//             }
//             else
//             {
//                 //This should never happen.
//             }
//         }
//
//         /// <summary>
//         /// Returns TransformProperties of the NetworkObject with the graphicals world offset.
//         /// </summary>
//         /// <returns></returns>
//         private TransformProperties GetNetworkObjectWorldPropertiesWithOffset() => _networkObject.transform.GetWorldProperties(_gfxInitializedOffsetValues);
//
//         /// <summary>
//         /// Returns if prediction can be used on this rigidbody.
//         /// </summary>
//         /// <returns></returns>
//         private bool CanSmooth()
//         {
//             if (_graphicalObject == null)
//                 return false;
//
//             return true;
//         }
//
//         /// <summary>
//         /// Sets Position and Rotation move rates to reach Target datas.
//         /// </summary>
//         private void SetBasicMoveRates(TransformProperties prevValues, TransformProperties nextValues)
//         {
//             byte interpolation = _interpolation;
//             float duration = (_tickDelta * interpolation);
//             /* If interpolation is 1 then add on a tiny amount
//              * of more time to compensate for frame time, so that
//              * the smoothing does not complete before the next tick,
//              * as this would result in jitter. */
//             if (interpolation == 1)
//                 duration += (1 / 55f);
//             float teleportT = (_teleportThreshold * (float)interpolation);
//
//             _moveRates = MoveRates.GetMoveRates(prevValues, nextValues, duration, teleportT);
//             _moveRates.TimeRemaining = duration;
//         }
//
//
//         /// <summary>
//         /// Sets Position and Rotation move rates to reach Target datas.
//         /// </summary>
//         private void SetAdaptiveMoveRates(TransformProperties prevValues, TransformProperties nextValues)
//         {
//             float duration = _tickDelta;
//             /* If interpolation is 1 then add on a tiny amount
//              * of more time to compensate for frame time, so that
//              * the smoothing does not complete before the next tick,
//              * as this would result in jitter. */
//             float teleportT = _teleportThreshold;
//             _moveRates = MoveRates.GetMoveRates(prevValues, nextValues, duration, teleportT);
//             _moveRates.TimeRemaining = duration;
//
//             SetMovementMultiplier();
//         }
//
//         private void SetMovementMultiplier()
//         {
//             /* If there's more in queue than interpolation then begin to move faster based on overage.
//             * Move 5% faster for every overage. */
//             int overInterpolation = (_transformProperties.Count - _interpolation);
//             //If needs to be adjusted.
//             if (overInterpolation != 0f)
//             {
//                 _movementMultiplier += (0.015f * overInterpolation);
//             }
//             //If does not need to be adjusted.
//             else
//             {
//                 //If interpolation is 1 then slow down just barely to accomodate for frame delta variance.
//                 if (_interpolation == 1)
//                     _movementMultiplier = 0.99f;
//             }
//
//             _movementMultiplier = Mathf.Clamp(_movementMultiplier, 0.95f, 1.05f);
//         }
//
//
//         /// <summary>
//         /// Moves transform to target values.
//         /// </summary>
//         
//         private void BasicMoveToTarget(float delta)
//         {
//             int tpCount = _transformProperties.Count;
//             //No data.
//             if (tpCount == 0)
//                 return;
//
//             TickTransformProperties ttp = _transformProperties.Peek();
//             _moveRates.MoveWorldToTarget(_graphicalObject, ttp.Properties, delta);
//
//             //if TimeLeft is <= 0f then transform should be at goal.
//             if (_moveRates.TimeRemaining <= 0f)
//                 ClearTransformPropertiesQueue();
//         }
//
//         /// <summary>
//         /// Moves transform to target values.
//         /// </summary>
//         
//         private void AdaptiveMoveToTarget(float delta)
//         {
//             int tpCount = _transformProperties.Count;
//             //No data.
//             if (tpCount == 0)
//                 return;
//             /* If buffer is considerably under goal then halt
//              * movement. This will allow the buffer to grow. */
//             if ((tpCount - _interpolation) < -4)
//                 return;
//
//             TickTransformProperties ttp = _transformProperties.Peek();
//             TransformPropertiesFlag smoothedProperties = (_ownerOnPretick) ? _ownerSmoothedProperties : _spectatorSmoothedProperties;
//             _moveRates.MoveWorldToTarget(_graphicalObject, ttp.Properties, smoothedProperties, (delta * _movementMultiplier));
//             float tRemaining = _moveRates.TimeRemaining;
//             //if TimeLeft is <= 0f then transform is at goal. Grab a new goal if possible.
//             if (tRemaining <= 0f)
//             {
//                 //Dequeue current entry and if there's another call a move on it.
//                 _transformProperties.Dequeue();
//
//                 //If there are entries left then setup for the next.
//                 if (_transformProperties.Count > 0)
//                 {
//                     SetAdaptiveMoveRates(ttp.Properties, _transformProperties.Peek().Properties);
//                     //If delta is negative then call move again with abs.
//                     if (tRemaining < 0f)
//                         AdaptiveMoveToTarget(Mathf.Abs(tRemaining));
//                 }
//                 //No remaining, set to snap.
//                 else
//                 {
//                     ClearTransformPropertiesQueue();
//                 }
//             }
//         }
//
//         public void ResetState()
//         {
//             if (!_initialized)
//                 return;
//
//             _networkObject = null;
//             if (_graphicalObject != null)
//             {
//                 if (_networkObject != null)
//                 {
//                     if (_detach)
//                         _graphicalObject.SetParent(_networkObject.transform);
//                     _graphicalObject.SetWorldProperties(GetNetworkObjectWorldPropertiesWithOffset());
//                     _graphicalObject = null;
//                 }
//                 else if (_detach)
//                 {
//                     UnityEngine.Object.Destroy(_graphicalObject.gameObject);
//                 }
//             }
//             _movementMultiplier = 1f;
//             CollectionCaches<TickTransformProperties>.StoreAndDefault(ref _transformProperties);
//             _teleportThreshold = default;
//             _moveRates = default;
//             _preTicked = default;
//             _gfxInitializedOffsetValues = default;
//             _gfxPreSimulateWorldValues = default;
//             _tickDelta = default;
//             _interpolation = default;
//         }
//
//         public void InitializeState() { }
//     }
//
// }

